Severe Thunderstorms and Heavy Rainfall for the Southwest; Heat Spreads Across the Center of the Nation

Moisture will continue to move into areas of the West. This will increase showers and thunderstorms coverage and intensity, with the risk of flash flooding and damaging wind gusts. Meanwhile, heat across the Southwest will expand into the center of the nation this weekend into early next week. Trends favor this heat will spread across the Ohio Valley, mid-Atlantic next week. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

Lat: 47.49509°NLon: 122.21437°WElev: 23.0ft.

Overcast

61°F

16°C

Humidity 72%
Wind Speed N 0 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 29 Aug 05:35 AM PDT
Extended Forecast for

Renton WA

  • Overnight

    Overnight: Showers and possibly a thunderstorm.  Low around 55. South wind around 5 mph.  Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Showers

  • Saturday

    Saturday: Rain and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then a chance of rain after 2pm.  High near 69. Southwest wind 3 to 5 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Showers then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 53. South southeast wind 3 to 6 mph.

    Low: 53 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 70. South wind around 5 mph becoming calm  in the morning.

    High: 70 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 53. Light north northeast wind.

    Low: 53 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 74.

    High: 74 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of rain.  Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance Rain

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 55. South wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Rain and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then a chance of rain after 2pm. High near 69. Southwest wind 3 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Increasing clouds, with a low around 53. South southeast wind 3 to 6 mph.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 70. South wind around 5 mph becoming calm in the morning.
Sunday Night
Partly cloudy, with a low around 53. Light north northeast wind.
Monday
Mostly sunny, with a high near 74.
Monday Night
Mostly cloudy, with a low around 55.
Tuesday
Mostly cloudy, with a high near 74.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 56.
Wednesday
Rain likely, mainly after 11am. Cloudy, with a high near 66.
Wednesday Night
Rain. Mostly cloudy, with a low around 54.
Thursday
Rain likely. Mostly cloudy, with a high near 66.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 52.
Friday
A chance of rain. Partly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
Renton WA
 47.48°N 122.19°W (Elev. 200 ft)
11:26 pm PDT Aug 28, 2026
5am PDT Aug 29, 2026-6pm PDT Sep 4, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database